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<div class="subTitle">org.apache.commons.math3.random</div>
<h2 title="Class ValueServer" class="title">Class ValueServer</h2>
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<pre>public class <span class="strong">ValueServer</span>
extends <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre>
<div class="block">Generates values for use in simulation applications.
 <p>
 How values are generated is determined by the <code>mode</code>
 property.</p>
 <p>
 Supported <code>mode</code> values are: <ul>
 <li> DIGEST_MODE -- uses an empirical distribution </li>
 <li> REPLAY_MODE -- replays data from <code>valuesFileURL</code></li>
 <li> UNIFORM_MODE -- generates uniformly distributed random values with
                      mean = <code>mu</code> </li>
 <li> EXPONENTIAL_MODE -- generates exponentially distributed random values
                         with mean = <code>mu</code></li>
 <li> GAUSSIAN_MODE -- generates Gaussian distributed random values with
                       mean = <code>mu</code> and
                       standard deviation = <code>sigma</code></li>
 <li> CONSTANT_MODE -- returns <code>mu</code> every time.</li></ul></p></div>
<dl><dt><span class="strong">Version:</span></dt>
  <dd>$Id: ValueServer.java 1587494 2014-04-15 10:02:54Z erans $</dd></dl>
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<h3>Field Summary</h3>
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<caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/ValueServer.html#CONSTANT_MODE">CONSTANT_MODE</a></strong></code>
<div class="block">Always return mu</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/ValueServer.html#DIGEST_MODE">DIGEST_MODE</a></strong></code>
<div class="block">Use empirical distribution.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/ValueServer.html#EXPONENTIAL_MODE">EXPONENTIAL_MODE</a></strong></code>
<div class="block">Exponential random deviates with mean = &mu;.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/ValueServer.html#GAUSSIAN_MODE">GAUSSIAN_MODE</a></strong></code>
<div class="block">Gaussian random deviates with mean = &mu;, std dev = &sigma;.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/ValueServer.html#REPLAY_MODE">REPLAY_MODE</a></strong></code>
<div class="block">Replay data from valuesFilePath.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/ValueServer.html#UNIFORM_MODE">UNIFORM_MODE</a></strong></code>
<div class="block">Uniform random deviates with mean = &mu;.</div>
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<th class="colOne" scope="col">Constructor and Description</th>
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<tr class="altColor">
<td class="colOne"><code><strong><a href="../../../../../org/apache/commons/math3/random/ValueServer.html#ValueServer()">ValueServer</a></strong>()</code>
<div class="block">Creates new ValueServer</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><code><strong><a href="../../../../../org/apache/commons/math3/random/ValueServer.html#ValueServer(org.apache.commons.math3.random.RandomDataImpl)">ValueServer</a></strong>(<a href="../../../../../org/apache/commons/math3/random/RandomDataImpl.html" title="class in org.apache.commons.math3.random">RandomDataImpl</a>&nbsp;randomData)</code>
<div class="block"><strong>Deprecated.</strong>&nbsp;
<div class="block"><i>use <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#ValueServer(org.apache.commons.math3.random.RandomGenerator)"><code>ValueServer(RandomGenerator)</code></a></i></div>
</div>
</td>
</tr>
<tr class="altColor">
<td class="colOne"><code><strong><a href="../../../../../org/apache/commons/math3/random/ValueServer.html#ValueServer(org.apache.commons.math3.random.RandomGenerator)">ValueServer</a></strong>(<a href="../../../../../org/apache/commons/math3/random/RandomGenerator.html" title="interface in org.apache.commons.math3.random">RandomGenerator</a>&nbsp;generator)</code>
<div class="block">Construct a ValueServer instance using a RandomGenerator as its source
 of random data.</div>
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<h3>Method Summary</h3>
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<caption><span>Methods</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/ValueServer.html#closeReplayFile()">closeReplayFile</a></strong>()</code>
<div class="block">Closes <code>valuesFileURL</code> after use in REPLAY_MODE.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/ValueServer.html#computeDistribution()">computeDistribution</a></strong>()</code>
<div class="block">Computes the empirical distribution using values from the file
 in <code>valuesFileURL</code>, using the default number of bins.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/ValueServer.html#computeDistribution(int)">computeDistribution</a></strong>(int&nbsp;binCount)</code>
<div class="block">Computes the empirical distribution using values from the file
 in <code>valuesFileURL</code> and <code>binCount</code> bins.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/ValueServer.html#fill(double[])">fill</a></strong>(double[]&nbsp;values)</code>
<div class="block">Fills the input array with values generated using getNext() repeatedly.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>double[]</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/ValueServer.html#fill(int)">fill</a></strong>(int&nbsp;length)</code>
<div class="block">Returns an array of length <code>length</code> with values generated
 using getNext() repeatedly.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/commons/math3/random/EmpiricalDistribution.html" title="class in org.apache.commons.math3.random">EmpiricalDistribution</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/ValueServer.html#getEmpiricalDistribution()">getEmpiricalDistribution</a></strong>()</code>
<div class="block">Returns the <a href="../../../../../org/apache/commons/math3/random/EmpiricalDistribution.html" title="class in org.apache.commons.math3.random"><code>EmpiricalDistribution</code></a> used when operating in <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#DIGEST_MODE">0</a>.</div>
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</tr>
<tr class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/ValueServer.html#getMode()">getMode</a></strong>()</code>
<div class="block">Returns the data generation mode.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>double</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/ValueServer.html#getMu()">getMu</a></strong>()</code>
<div class="block">Returns the mean used when operating in <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#GAUSSIAN_MODE"><code>GAUSSIAN_MODE</code></a>, <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#EXPONENTIAL_MODE"><code>EXPONENTIAL_MODE</code></a>
 or <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#UNIFORM_MODE"><code>UNIFORM_MODE</code></a>.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>double</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/ValueServer.html#getNext()">getNext</a></strong>()</code>
<div class="block">Returns the next generated value, generated according
 to the mode value (see MODE constants).</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>double</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/ValueServer.html#getSigma()">getSigma</a></strong>()</code>
<div class="block">Returns the standard deviation used when operating in <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#GAUSSIAN_MODE"><code>GAUSSIAN_MODE</code></a>.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="http://docs.oracle.com/javase/6/docs/api/java/net/URL.html?is-external=true" title="class or interface in java.net">URL</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/ValueServer.html#getValuesFileURL()">getValuesFileURL</a></strong>()</code>
<div class="block">Returns the URL for the file used to build the empirical distribution
 when using <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#DIGEST_MODE"><code>DIGEST_MODE</code></a>.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/ValueServer.html#reSeed(long)">reSeed</a></strong>(long&nbsp;seed)</code>
<div class="block">Reseeds the random data generator.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/ValueServer.html#resetReplayFile()">resetReplayFile</a></strong>()</code>
<div class="block">Resets REPLAY_MODE file pointer to the beginning of the <code>valuesFileURL</code>.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/ValueServer.html#setMode(int)">setMode</a></strong>(int&nbsp;mode)</code>
<div class="block">Sets the data generation mode.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/ValueServer.html#setMu(double)">setMu</a></strong>(double&nbsp;mu)</code>
<div class="block">Sets the <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#getMu()"><code>mean</code></a> used in data generation.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/ValueServer.html#setSigma(double)">setSigma</a></strong>(double&nbsp;sigma)</code>
<div class="block">Sets the <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#getSigma()"><code>standard deviation</code></a> used in <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#GAUSSIAN_MODE"><code>GAUSSIAN_MODE</code></a>.</div>
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</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/ValueServer.html#setValuesFileURL(java.lang.String)">setValuesFileURL</a></strong>(<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;url)</code>
<div class="block">Sets the <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#getValuesFileURL()"><code>values file URL</code></a> using a string
 URL representation.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/ValueServer.html#setValuesFileURL(java.net.URL)">setValuesFileURL</a></strong>(<a href="http://docs.oracle.com/javase/6/docs/api/java/net/URL.html?is-external=true" title="class or interface in java.net">URL</a>&nbsp;url)</code>
<div class="block">Sets the the <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#getValuesFileURL()"><code>values file URL</code></a>.</div>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
<code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</a></code></li>
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<pre>public static final&nbsp;int DIGEST_MODE</pre>
<div class="block">Use empirical distribution.</div>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../constant-values.html#org.apache.commons.math3.random.ValueServer.DIGEST_MODE">Constant Field Values</a></dd></dl>
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<pre>public static final&nbsp;int REPLAY_MODE</pre>
<div class="block">Replay data from valuesFilePath.</div>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../constant-values.html#org.apache.commons.math3.random.ValueServer.REPLAY_MODE">Constant Field Values</a></dd></dl>
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<pre>public static final&nbsp;int UNIFORM_MODE</pre>
<div class="block">Uniform random deviates with mean = &mu;.</div>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../constant-values.html#org.apache.commons.math3.random.ValueServer.UNIFORM_MODE">Constant Field Values</a></dd></dl>
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<pre>public static final&nbsp;int EXPONENTIAL_MODE</pre>
<div class="block">Exponential random deviates with mean = &mu;.</div>
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<pre>public static final&nbsp;int GAUSSIAN_MODE</pre>
<div class="block">Gaussian random deviates with mean = &mu;, std dev = &sigma;.</div>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../constant-values.html#org.apache.commons.math3.random.ValueServer.GAUSSIAN_MODE">Constant Field Values</a></dd></dl>
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<pre>public static final&nbsp;int CONSTANT_MODE</pre>
<div class="block">Always return mu</div>
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<pre>public&nbsp;ValueServer()</pre>
<div class="block">Creates new ValueServer</div>
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<pre><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a>
public&nbsp;ValueServer(<a href="../../../../../org/apache/commons/math3/random/RandomDataImpl.html" title="class in org.apache.commons.math3.random">RandomDataImpl</a>&nbsp;randomData)</pre>
<div class="block"><span class="strong">Deprecated.</span>&nbsp;<i>use <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#ValueServer(org.apache.commons.math3.random.RandomGenerator)"><code>ValueServer(RandomGenerator)</code></a></i></div>
<div class="block">Construct a ValueServer instance using a RandomDataImpl as its source
 of random data.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>randomData</code> - the RandomDataImpl instance used to source random data</dd><dt><span class="strong">Since:</span></dt>
  <dd>3.0</dd></dl>
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<pre>public&nbsp;ValueServer(<a href="../../../../../org/apache/commons/math3/random/RandomGenerator.html" title="interface in org.apache.commons.math3.random">RandomGenerator</a>&nbsp;generator)</pre>
<div class="block">Construct a ValueServer instance using a RandomGenerator as its source
 of random data.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>generator</code> - source of random data</dd><dt><span class="strong">Since:</span></dt>
  <dd>3.1</dd></dl>
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<pre>public&nbsp;double&nbsp;getNext()
               throws <a href="http://docs.oracle.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a>,
                      <a href="../../../../../org/apache/commons/math3/exception/MathIllegalStateException.html" title="class in org.apache.commons.math3.exception">MathIllegalStateException</a>,
                      <a href="../../../../../org/apache/commons/math3/exception/MathIllegalArgumentException.html" title="class in org.apache.commons.math3.exception">MathIllegalArgumentException</a></pre>
<div class="block">Returns the next generated value, generated according
 to the mode value (see MODE constants).</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>generated value</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - in REPLAY_MODE if a file I/O error occurs</dd>
<dd><code><a href="../../../../../org/apache/commons/math3/exception/MathIllegalStateException.html" title="class in org.apache.commons.math3.exception">MathIllegalStateException</a></code> - if mode is not recognized</dd>
<dd><code><a href="../../../../../org/apache/commons/math3/exception/MathIllegalArgumentException.html" title="class in org.apache.commons.math3.exception">MathIllegalArgumentException</a></code> - if the underlying random generator thwrows one</dd></dl>
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<h4>fill</h4>
<pre>public&nbsp;void&nbsp;fill(double[]&nbsp;values)
          throws <a href="http://docs.oracle.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a>,
                 <a href="../../../../../org/apache/commons/math3/exception/MathIllegalStateException.html" title="class in org.apache.commons.math3.exception">MathIllegalStateException</a>,
                 <a href="../../../../../org/apache/commons/math3/exception/MathIllegalArgumentException.html" title="class in org.apache.commons.math3.exception">MathIllegalArgumentException</a></pre>
<div class="block">Fills the input array with values generated using getNext() repeatedly.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>values</code> - array to be filled</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - in REPLAY_MODE if a file I/O error occurs</dd>
<dd><code><a href="../../../../../org/apache/commons/math3/exception/MathIllegalStateException.html" title="class in org.apache.commons.math3.exception">MathIllegalStateException</a></code> - if mode is not recognized</dd>
<dd><code><a href="../../../../../org/apache/commons/math3/exception/MathIllegalArgumentException.html" title="class in org.apache.commons.math3.exception">MathIllegalArgumentException</a></code> - if the underlying random generator thwrows one</dd></dl>
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<pre>public&nbsp;double[]&nbsp;fill(int&nbsp;length)
              throws <a href="http://docs.oracle.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a>,
                     <a href="../../../../../org/apache/commons/math3/exception/MathIllegalStateException.html" title="class in org.apache.commons.math3.exception">MathIllegalStateException</a>,
                     <a href="../../../../../org/apache/commons/math3/exception/MathIllegalArgumentException.html" title="class in org.apache.commons.math3.exception">MathIllegalArgumentException</a></pre>
<div class="block">Returns an array of length <code>length</code> with values generated
 using getNext() repeatedly.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>length</code> - length of output array</dd>
<dt><span class="strong">Returns:</span></dt><dd>array of generated values</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - in REPLAY_MODE if a file I/O error occurs</dd>
<dd><code><a href="../../../../../org/apache/commons/math3/exception/MathIllegalStateException.html" title="class in org.apache.commons.math3.exception">MathIllegalStateException</a></code> - if mode is not recognized</dd>
<dd><code><a href="../../../../../org/apache/commons/math3/exception/MathIllegalArgumentException.html" title="class in org.apache.commons.math3.exception">MathIllegalArgumentException</a></code> - if the underlying random generator thwrows one</dd></dl>
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<h4>computeDistribution</h4>
<pre>public&nbsp;void&nbsp;computeDistribution()
                         throws <a href="http://docs.oracle.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a>,
                                <a href="../../../../../org/apache/commons/math3/exception/ZeroException.html" title="class in org.apache.commons.math3.exception">ZeroException</a>,
                                <a href="../../../../../org/apache/commons/math3/exception/NullArgumentException.html" title="class in org.apache.commons.math3.exception">NullArgumentException</a></pre>
<div class="block">Computes the empirical distribution using values from the file
 in <code>valuesFileURL</code>, using the default number of bins.
 <p>
 <code>valuesFileURL</code> must exist and be
 readable by *this at runtime.</p>
 <p>
 This method must be called before using <code>getNext()</code>
 with <code>mode = DIGEST_MODE</code></p></div>
<dl><dt><span class="strong">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - if an I/O error occurs reading the input file</dd>
<dd><code><a href="../../../../../org/apache/commons/math3/exception/NullArgumentException.html" title="class in org.apache.commons.math3.exception">NullArgumentException</a></code> - if the <code>valuesFileURL</code> has not been set</dd>
<dd><code><a href="../../../../../org/apache/commons/math3/exception/ZeroException.html" title="class in org.apache.commons.math3.exception">ZeroException</a></code> - if URL contains no data</dd></dl>
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<pre>public&nbsp;void&nbsp;computeDistribution(int&nbsp;binCount)
                         throws <a href="../../../../../org/apache/commons/math3/exception/NullArgumentException.html" title="class in org.apache.commons.math3.exception">NullArgumentException</a>,
                                <a href="http://docs.oracle.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a>,
                                <a href="../../../../../org/apache/commons/math3/exception/ZeroException.html" title="class in org.apache.commons.math3.exception">ZeroException</a></pre>
<div class="block">Computes the empirical distribution using values from the file
 in <code>valuesFileURL</code> and <code>binCount</code> bins.
 <p>
 <code>valuesFileURL</code> must exist and be readable by this process
 at runtime.</p>
 <p>
 This method must be called before using <code>getNext()</code>
 with <code>mode = DIGEST_MODE</code></p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>binCount</code> - the number of bins used in computing the empirical
 distribution</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="../../../../../org/apache/commons/math3/exception/NullArgumentException.html" title="class in org.apache.commons.math3.exception">NullArgumentException</a></code> - if the <code>valuesFileURL</code> has not been set</dd>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - if an error occurs reading the input file</dd>
<dd><code><a href="../../../../../org/apache/commons/math3/exception/ZeroException.html" title="class in org.apache.commons.math3.exception">ZeroException</a></code> - if URL contains no data</dd></dl>
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<pre>public&nbsp;int&nbsp;getMode()</pre>
<div class="block">Returns the data generation mode. See <a href="../../../../../org/apache/commons/math3/random/ValueServer.html" title="class in org.apache.commons.math3.random"><code>the class javadoc</code></a>
 for description of the valid values of this property.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>Value of property mode.</dd></dl>
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<pre>public&nbsp;void&nbsp;setMode(int&nbsp;mode)</pre>
<div class="block">Sets the data generation mode.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>mode</code> - New value of the data generation mode.</dd></dl>
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<a name="getValuesFileURL()">
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<h4>getValuesFileURL</h4>
<pre>public&nbsp;<a href="http://docs.oracle.com/javase/6/docs/api/java/net/URL.html?is-external=true" title="class or interface in java.net">URL</a>&nbsp;getValuesFileURL()</pre>
<div class="block">Returns the URL for the file used to build the empirical distribution
 when using <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#DIGEST_MODE"><code>DIGEST_MODE</code></a>.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>Values file URL.</dd></dl>
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<h4>setValuesFileURL</h4>
<pre>public&nbsp;void&nbsp;setValuesFileURL(<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;url)
                      throws <a href="http://docs.oracle.com/javase/6/docs/api/java/net/MalformedURLException.html?is-external=true" title="class or interface in java.net">MalformedURLException</a></pre>
<div class="block">Sets the <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#getValuesFileURL()"><code>values file URL</code></a> using a string
 URL representation.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>url</code> - String representation for new valuesFileURL.</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/net/MalformedURLException.html?is-external=true" title="class or interface in java.net">MalformedURLException</a></code> - if url is not well formed</dd></dl>
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<h4>setValuesFileURL</h4>
<pre>public&nbsp;void&nbsp;setValuesFileURL(<a href="http://docs.oracle.com/javase/6/docs/api/java/net/URL.html?is-external=true" title="class or interface in java.net">URL</a>&nbsp;url)</pre>
<div class="block">Sets the the <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#getValuesFileURL()"><code>values file URL</code></a>.

 <p>The values file <i>must</i> be an ASCII text file containing one
 valid numeric entry per line.</p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>url</code> - URL of the values file.</dd></dl>
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<pre>public&nbsp;<a href="../../../../../org/apache/commons/math3/random/EmpiricalDistribution.html" title="class in org.apache.commons.math3.random">EmpiricalDistribution</a>&nbsp;getEmpiricalDistribution()</pre>
<div class="block">Returns the <a href="../../../../../org/apache/commons/math3/random/EmpiricalDistribution.html" title="class in org.apache.commons.math3.random"><code>EmpiricalDistribution</code></a> used when operating in <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#DIGEST_MODE">0</a>.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>EmpircalDistribution built by <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#computeDistribution()"><code>computeDistribution()</code></a></dd></dl>
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<h4>resetReplayFile</h4>
<pre>public&nbsp;void&nbsp;resetReplayFile()
                     throws <a href="http://docs.oracle.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Resets REPLAY_MODE file pointer to the beginning of the <code>valuesFileURL</code>.</div>
<dl><dt><span class="strong">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - if an error occurs opening the file</dd>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/NullPointerException.html?is-external=true" title="class or interface in java.lang">NullPointerException</a></code> - if the <code>valuesFileURL</code> has not been set.</dd></dl>
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<h4>closeReplayFile</h4>
<pre>public&nbsp;void&nbsp;closeReplayFile()
                     throws <a href="http://docs.oracle.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Closes <code>valuesFileURL</code> after use in REPLAY_MODE.</div>
<dl><dt><span class="strong">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - if an error occurs closing the file</dd></dl>
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<pre>public&nbsp;double&nbsp;getMu()</pre>
<div class="block">Returns the mean used when operating in <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#GAUSSIAN_MODE"><code>GAUSSIAN_MODE</code></a>, <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#EXPONENTIAL_MODE"><code>EXPONENTIAL_MODE</code></a>
 or <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#UNIFORM_MODE"><code>UNIFORM_MODE</code></a>.  When operating in <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#CONSTANT_MODE"><code>CONSTANT_MODE</code></a>, this is the constant
 value always returned.  Calling <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#computeDistribution()"><code>computeDistribution()</code></a> sets this value to the
 overall mean of the values in the <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#getValuesFileURL()"><code>values file</code></a>.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>Mean used in data generation.</dd></dl>
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<pre>public&nbsp;void&nbsp;setMu(double&nbsp;mu)</pre>
<div class="block">Sets the <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#getMu()"><code>mean</code></a> used in data generation.  Note that calling this method
 after <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#computeDistribution()"><code>computeDistribution()</code></a> has been called will have no effect on data
 generated in <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#DIGEST_MODE"><code>DIGEST_MODE</code></a>.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>mu</code> - new Mean value.</dd></dl>
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<pre>public&nbsp;double&nbsp;getSigma()</pre>
<div class="block">Returns the standard deviation used when operating in <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#GAUSSIAN_MODE"><code>GAUSSIAN_MODE</code></a>.
 Calling <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#computeDistribution()"><code>computeDistribution()</code></a> sets this value to the overall standard
 deviation of the values in the <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#getValuesFileURL()"><code>values file</code></a>.  This
 property has no effect when the data generation mode is not
 <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#GAUSSIAN_MODE"><code>GAUSSIAN_MODE</code></a>.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>Standard deviation used when operating in <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#GAUSSIAN_MODE"><code>GAUSSIAN_MODE</code></a>.</dd></dl>
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<pre>public&nbsp;void&nbsp;setSigma(double&nbsp;sigma)</pre>
<div class="block">Sets the <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#getSigma()"><code>standard deviation</code></a> used in <a href="../../../../../org/apache/commons/math3/random/ValueServer.html#GAUSSIAN_MODE"><code>GAUSSIAN_MODE</code></a>.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>sigma</code> - New standard deviation.</dd></dl>
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<pre>public&nbsp;void&nbsp;reSeed(long&nbsp;seed)</pre>
<div class="block">Reseeds the random data generator.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>seed</code> - Value with which to reseed the <a href="../../../../../org/apache/commons/math3/random/RandomDataImpl.html" title="class in org.apache.commons.math3.random"><code>RandomDataImpl</code></a>
 used to generate random data.</dd></dl>
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